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  1. #1

    Default Stock manifold collector size?

    Does anyone know what the stock manifold collector size is? Thanks
    1996 Trans Am A4- K&N Cold Air - Pacesetter LT's - Yank 3000 Stall - True Duals w/xpipe & Bullets - HSW Wet Kit - M/T Drag Radials

  2. #2
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    I am not sure on the 96's. The stock collectors on my 93 are 2-1/4". I bought a Magnaflow replacement Y pipe that has 2-1/4" collectors and then went up to 2-1/2". At the cat it is 3".

    That did not work so well. In removing the stock Y pipe, I busted a stud off of each manifold. Needless to say the stock manifolds are not going back on.
    93 LT1 M6, LE, 223/230 .565/.565 112, Stg2 heads, Ported intake, 32lb injectors. Pacesetter mids. 1.6RR Tunned by Chuck Summer's. 382/351
    2000 F350 7.3 diesel, BTS auto CC Dually 4X4. Way to many parts. 689rwhp/1450ftlb's

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